Folding box



July 14, 1936- rD. H. sHAPlRo 2,047,804

FOLDING-BOX Filed oct. a, 1954 /3 pauz'd H. Shapiro.

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E Nav bill Patented July 14, 1936 UNITED STATES PATENT OFFICE FOLDING BOX David H. Shapiro, Montreal, Quebec. l"

This invention relates to a collapsible container made of sheet material such as cardboard, etc. which is formed into a tubular body having ,both end extensions creased .in such a way as to form a novel and tight closure.

One object of -this invention is to provide improved means for fastening the end closing extensions against displacement.

, Another object of this invention resides in the improved construction of the ends oi' such a container, which will effectively seal the container against leakage and at the same time permit easy operation of the opening and closing of the same.

Another object of this invention is to provide a box suitable for shipment of substances in powder form such as cleanser, soap, talcum as well as larger articles, such as hats, etc.

This invention accordingly consists in the fea.- tures of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof all as more completely outlined herein.

To enable others skilled in the art so fully to comprehend the underlying features thereof that they 'may embody the same by the numerous modications in structure and relation contemplated by this invention, a drawing depicting a. form of the invention has been annexed as a part of this disclosure, and in such drawing, like characters of reference denote corresponding parts throughout all the views, of whichz- Fig. 1 is a plan view of a blank employed in producing the container.

Fig. 2 is a top view of one. end, after the container has been formed, the end being shown open.

Fig. 3 is a side elevational view of Fig. 2.

Fig. 44 is a similar View as Fig. 2, but illustrating the end of the container in the closed position.

Fig. 5 is a diagrammatic view of Fig. 4, with the folded ends in the positionV prior to the final closing location.

Fig. 6 is a diagrammatic view of Fig. d, with the folded ends depressed past the neutral point and thereby remaining locked until pulled out again.

In the embodiment illustrated in Fig. l, the body it and both end closing extensions i i and i2, respectively, are made out of one rectangular blank of paper, cardboard or other suitable material capable of being bent to the required shape. The blank is scored along lines it to form body panels it. vThe form illustrated is of a hexagon shape, but any polygon shape may be usefully applied. Along one end of the blank is a strip it need for pasting or otherwise securing the bor:

in the tubular shape. The top and bottom edges of panels I4 are dened by upper and lower score lines I6 and Il intersecting the score lines I3 at I8 and I9, respectively. Score lines 20 and 2l form end tabs or flaps 22. End portions Ii and I2 are provided with diagonal score lines 23 and 24 which, when folded as in Fig. 4 provide the closing means.

Intersection point 25 of ap 22 and score lines 23 and 24 are the closing contact points. Triangular portions 26 form the real ends and are designed such, that the radius of the tube is slightly less than the lengthof the triangular piece 26, which will bring the same into the position as illustrated in Fig. 5, diagrammatically. This position is the closed, but not the locked position. Each of the extensions II, I2 has its outer free end cut substantially intermediate or midway between the vertical score lines I3' which may provide a slit or notch 25' or shoulders which may have rounded corners. y

To lock the end, triangular pieces 26 have to be pushed downward, past the neutral line 2l into the position illustrated in Fig. 6. To open one end, pull on tab 22, which may be marked as indicated at 28.

End portions I I and I2 will look as shown in Fig. 2 when the tube end is open. Score lines I3 will permit portions 23 and 24' to fold closely and then push over sideways along score lines 23 and 24. The tabs will find their respective location automatically and the placing of each ine dividually will not be necessary.

The notches or slits 25 permit the end extensions II to intersect with each other and the end extensions I2 to intersect with each other at the notches or slits to retain the said respective end extensions ii, I2 in their closing positions. The rounded corners of notches or slits 25' facilitate interlocking of the notches or slits when the blank is folded to provide a container.

The cut or cut-out (one embodiment of which is shown as the slit or notch 25') produces an abutment or abutments on each extension, the abutments being adapted, when the extensions are folded on the horizontal score lines beyond the neutral line, to cooperatively interlock to produce a closure.

While the seal of the ends as provided is tight and secure sumciently as shown, it may be desirable at times to seal the ends with pastors or labels, which are not shown in the drawing.

. It is believed from the above description that those skilled in the art will have no difiicuity in understanding the construction, the method of use and operation of the device herein disclosed and a detailed discussion thereof is unnecessary. The invention is of simple and practical construction and is adapted to accomplish among others all of the objects and advantages herein set forth;

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can by applying current knowledge readily adapt it for various applications without omitting certain features, that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore, such adaptations should and are intended to be comprehended within the meaning and range of equivalency of the following claims.

I claim:

1. A foldable blank provided with a series of vertical score lines extending between its upper and lower edges, upper and lower horizontal score lines extending between the remaining edges,

notches formed in each of the first-mentioned edges at points intermediate the vertical score lines and a diagonal score line extending from each notch to each adjacent intersection of the vertical and horizontal score lines, said notches having round corners to facilitate interlocking of the notches when the blank is folded to provide a container.

2. A container comprising a tubular structure presenting angularly related side panels of rectangular configuration and inwardly foldable end panels of similar configurations at opposite ends of each side panel, each end panel having a score line near its end forming an end tab, said tab having its outer transverse edge notched at a point between its side edges, each of said end panels being provided with a diagonal score line extending from the notch to each one of the inner corners of said panel.

3. A foldable blank provided with a series of 5 vertical score lines extending between its upper and lower edges, upper and lower horizontal score lines extending between the remaining edges, each horizontal score line forming with the vertical score lines end extensions between the latter, cuts 1o formed in said rst mentioned upper and lower edges at points midway between the vertical score lines, and a diagonal score line extending from each cut to each adjacent intersection of the vertical and horizontal score lines, said cuts permitl5 ting the said end extensions when folded together along score lines to intersect with each other at the said cuts to retain the said end extensions in closing positions.

4. A foldable blank provided with a series of 20 vertical score lines extending between its upper and lower edges, upper and lower horizontal score lines extending between the remaining edges each horizontal score line forming with the vertical score lines, end extensions between the latter, 25 abutments at said rst-mentioned edges at points substantially midway between the vertical score lines, and at least one diagonal score line in each end extension extending from the abutment to an adjacent intersection of the vertical and hori- 30 zontal score lines, said abutments being adapted, whenr lthe extensions are folded on the diagonal score lines and the horizontal score lines beyond the neutral line, to cooperatively interlock to produce a closure. 35

DAVID H. SHAPIRO. 

